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Top Forums Shell Programming and Scripting cat in the command line doesn't match cat in the script Post 302280844 by nixnoob on Tuesday 27th of January 2009 04:41:04 PM
Old 01-27-2009
Quote:
Originally Posted by shira
Hey Nixnoob,

it's not working.
And you're not supposed to put -u and -d at the same time, it's sort of a rule.
Yeah, it's not supposed to even be necessary...-u and -d are the defaults if you just execute uniq.



Quote:
more didn't work, but what's the difference between more and cat?

It didn't print out anything, as if file2 was empty...
More just prints the output 1 page at a time where cat prints every thing to the output at once. I was thinking maybe cat was doing something it shouldn't be...it was just a random thought.

If you do an ls -la on file2 it will probably show the size as zero...that means the command errored and didn't actually create a readable file.

Now I'm just puzzled...I tried your original script and my way on a newly imaged HP-UX 11.23 server and I got the exact output I wanted.


*EDIT* Shira, as System Shock suggests, could you post the entire script as it is on your system?

Last edited by nixnoob; 01-27-2009 at 05:50 PM..
 

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cat(1)							      General Commands Manual							    cat(1)

Name
       cat - concatenate and print data

Syntax
       cat [ -b ] [ -e ] [ -n ] [ -s ] [ -t ] [ -u ] [ -v ] file...

Description
       The  command reads each file in sequence and displays it on the standard output.  Therefore, to display the file on the standard output you
       type:
       cat file
       To concatenate two files and place the result on the third you type:
       cat file1 file2 > file3
       To concatenate two files and append them to a third you type:
       cat file1 file2 >> file3
       If no input file is given, or if a minus sign (-) is encountered as an argument, reads from the standard input file.  Output is buffered in
       1024-byte blocks unless the standard output is a terminal, in which case it is line buffered.  The utility supports the processing of 8-bit
       characters.

Options
       -b   Ignores blank lines and precedes each output line with its line number.

       -e   Displays a dollar sign ($) at the end of each output line.

       -n   Precedes all output lines (including blank lines) with line numbers.

       -s   Squeezes adjacent blank lines from output and single spaces output.

       -t   Displays non-printing characters (including tabs) in output.  In addition to those representations used with the -v  option,  all  tab
	    characters are displayed as ^I.

       -u   Unbuffers output.

       -v   Displays  non-printing  characters (excluding tabs and newline) as the ^x.	If the character is in the range octal 0177 to octal 0241,
	    it is displayed as M-x. The delete character (octal 0177) displays as ^?.  For example, is displayed as ^X.

See Also
       cp(1), ex(1), more(1), pr(1), tail(1)

																	    cat(1)
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